Latest publications
Results 1951 to 1975 of 8726
The geographic distribution, stocks and vertical profiles of phytoplankton of the seasonal ice zone off … east Antarctica were determined during the 2005–2006 austral summer during the Baseline Research … on Oceanography, Krill and the Environment-West (BROKE-West) survey.
We use complementary observations … from the prototype Global Muon Detector Network … (GMDN) and the Advanced Composition Explorer … satellite to identify precursors of geomagnetic storm … events. The GMDN was completed in March 2006 … with the installation of the Kuwait detector…
We analyze the precursory anisotropy … of a Forbush decrease observed with the multidirectional … muon detector at S˜ao Martinho in Brazil … on December 14, 2006. By subtracting contribution … from the diurnal anisotropy precisely determined by … the GlobalMuon Detector Network (GMDN)…
We report the first observations of simultaneous high-latitude interhemispheric … F-region neutral wind fields by combining the 630 nm optical … measurements from two scanning Doppler imagers (SDI) and three … Fabry-Perot interferometers (FPI) for a period exceeding 5 hours.
We report the first observations of E region neutral wind fields and their interaction … with auroral arcs at mesoscale spatial resolution during geomagnetically quiet conditions at … Mawson, Antarctica. This was achieved by using a scanning Doppler imager…
The 33.2 MHz interferometric meteor radars located at Davis Station, Antarctica and Darwin, Australia typically detect around 15 000 specular underdense meteor echoes every day.
Systematic recording of the cosmic radiation commenced in Hobart in 1946 and at Mawson in Antarctica in 1955, making these two … of the longest running cosmic ray observatories in the world. For the IGY, observations were also made at a sub-Antarctic island and … near the equator…
The high-spatial-resolution observations of the auroral … E-region echoes by the Super Dual Auroral Radar Network … (SuperDARN) HF radar at Pykkvibaer, Iceland considered … in a previous study are re-examined.
[1] For the first time, the temperature of mesospheric ice … particles is retrieved directly from ice infrared extinction … spectra measured in the solar occultation regime. The … position of ice O-H stretch band peak varies from … 3230cm1 at T = 120K to 3246cm1 at T = 155K…
Circumpolar Deep Water (CDW) is the most extensive water mass in the Australian Circumpolar Current (ACC). Upper CDW (UCDW) is studied here over the period 1958-2005 using Simple Ocean Data Assimilation (SODA) reanalysis data.
Food web models depend on identifying which taxa are eaten and in what proportion they are consumed. Arctocephalus … seals are generalist foragers and are an ongoing focus of Southern Hemisphere marine ecosystem research. This is the first … feeding experiment to use Arctocephalus spp.
We evaluate atmospheric ionization during the Ground Level Enhancement (GLE) of 2005 Jan 20 using two methods: a Monte-Carlo (MC) air-shower simulation [1] and a continuous slowing down (CSD) energy loss approximation [2,3]. For both methods…
radionuclide 10Be may provide information on the timing and magnitude of past ground level enhancements (GLEs) in cosmic rays. In this paper, ice core 10Be concentrations from recent decades are compared with neutron monitor data in order to test this hypothesis.
Fidelity and projected changes in the climate models, used for the Intergovernmental Panel on Climate … Change (IPCC) Fourth Assessment Report (AR4), are assessed with regard to the Southern Hemisphere … extratropical ocean and sea ice systems.